Interactions on record — worth a quick check against your medications. Based on 1 of 5 ingredients. Check your meds →
Dietary supplement

Flax Oil Omega-3 Oil Ingredients & Drug Interactions

by Herbal Select

Flax Oil Omega-3 Oil label
See full label image
Liquid Category: Fat/fatty Acid
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Flax Oil Omega-3 Oil against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Flax Oil Omega-3 Oil is a dietary supplement by Herbal Select with 5 active ingredients. Its ingredients are commonly taken for source of omega-3 (ala) fatty acids, heart and cholesterol health, dry skin and inflammation.Based on those ingredients, 293 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are certified organic Flax seed Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Flax Oil Omega-3 Oil by Herbal Select

Ask about any prescription or over-the-counter medication and we check it for interactions with Flax Oil Omega-3 Oil by Herbal Select — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Flax Oil Omega-3 Oil by Herbal Select

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Partial disclosure
Ingredient Transparency · database check
Partial

Most active ingredients list an amount, but at least one is hidden in a blend or missing.

Why this rating?
  • The label discloses an exact amount for 3 of its 4 active ingredients.
  • “Fats” is listed as a grouped ingredient — the label gives one combined amount (14 Gram(s)) without saying how much of each component you get.
  • “Nutritional Information:” is listed as a grouped ingredient — the label doesn't break down how much of each component you get.

This product has 4 listed ingredients, with certified organic flaxseed oil as the main active component. Flaxseed oil is rich in alpha-linolenic acid, an omega-3 fatty acid.

The label also breaks down the fat profile (polyunsaturates, monounsaturates, and saturates) and lists inactive ingredients — rosemary, mixed tocopherols, ascorbyl palmitate, and citric acid — which are preservatives and stabilizers.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Flaxseed Oil's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: Source of omega-3 fatty acids for wellness.
  • We looked for evidence on: Atherosclerosis, Cardiovascular disease (CVD), Hyperlipidemia, Hypertension, Dry skin, Dry eye — and 3 related terms.
  • The closest evidence on file: Flaxseed Oil is rated "Possibly Ineffective" for Hyperlipidemia (Natural Medicines).
  • Also on file: Flaxseed Oil is rated "Possibly Ineffective" for Rheumatoid arthritis (RA).
  • Also on file: Flaxseed Oil is rated "Insufficient Reliable Evidence To Rate" for Atherosclerosis, Cardiovascular disease (CVD), Dry eye, Dry skin, and more.

The evidence for flaxseed oil's effectiveness is limited. Our data shows it's rated possibly ineffective for obesity, rheumatoid arthritis (RA), bipolar disorder, and high cholesterol (hyperlipidemia).

This doesn't mean it won't help you — it means the clinical evidence available doesn't strongly support these uses. If you're considering this product for a specific health goal, talk with your pharmacist or doctor about what the research actually shows for your situation.

The evidence, ingredient by ingredient Flaxseed Oil

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Flaxseed oil is generally well tolerated by most adults when taken by mouth. A small number of people report mild side effects like changes in bowel habits, dry mouth, or stomach upset at around 5 grams daily, and higher doses (30 grams or more daily) can cause loose stools and diarrhea.

Severe allergic reactions are rare. The safety data during pregnancy isn't clear enough to recommend it without talking to your doctor first, and there's limited safety information during breastfeeding — medical advice is needed before use.

Side effects, ingredient by ingredient Flaxseed Oil

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Flaxseed Oil.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 293 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, check your medications against blood thinners or antiplatelet drugs (Moderate severity), blood pressure medications (Moderate severity), and ezetimibe/Zetia (Moderate severity). Altogether, these interactions span 291 individual medications.

Use the checker on this page to verify your exact drugs.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glancePartially disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Flax oil is a straightforward omega-3 supplement, generally well tolerated, but it interacts with blood thinners, blood pressure drugs, and cholesterol medications — so check your prescriptions first. If you're pregnant, breastfeeding, or on any regular medications, talk with your pharmacist before starting.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 25, 2014.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Flax Oil Omega-3 Oil, straight from the product label.

Brand Herbal Select
Barcode (UPC) 065279021347
Net contents 350 mL
Market status On market
Date entered into DSLD Jun 25, 2014
DSLD ID 34176
Product type Fat/fatty Acid
Supplement form Liquid
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years), Organic, Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Flax Oil Omega-3 Oil by Herbal Select, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Tablespoon(s)
Maximum serving Sizes:
1 Tablespoon(s)
UPC/BARCODE
065279021347
IngredientAmount% DV
Protein0 Gram(s)--
Cholesterol0 Gram(s)--
Carbohydrates0 Gram(s)--
Energy120 Calorie(s)--
Fats14 Gram(s)--
certified organic Flax seed Oil0 NP--
Nutritional Information:0 NP--
Polyunsaturates {Fat}10 Gram(s)--
Monounsaturates {Fat}3 Gram(s)--
Saturates {Fat}1 Gram(s)--

Other ingredients: Rosemary, Mixed Tocopherols, Ascorbyl Palmitate, Citric Acid

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements

Potent-Max 100% pure cold-pressed

Our unrefined oil is bottled to maintain its light taste and maximum freshness. This special container prevents free radical formation due to light. Herbal Select's unique, natural preservation system allows for room temperature storage of unopened bottles.

Not for cooking or frying. Do not heat over 320(o)F/160(o)C.

Brand IP Statement(s)

Herbal Select flax oil is fresh pressed from certified organically grown seeds using the exclusive hexane-free Bio-flo(R) process which reduces exposure to light, heat, and air during manufacturing.

Suggested/Recommended/Usage/Directions

Directions: Consume 1 tablespoon daily in salad dressings, dips, spreads, sauces, blender creations or as a condiment over pasta/rice. Use as butter replacement except for frying. Consume within 6 weeks of opening.

Storage

Refrigerate after opening.

Refrigerate after opening.

Can be frozen to extend shelf life.

Formulation

Herbal Select flax oil contains no artificial colouring, flavouring, soy, wheat, yeast, corn, starch, dairy, cholesterol, sediments or bleaching oil.

Certified Organic 100% pure cold-pressed

Precautions

Do not use if seal is broken.

Seals/Symbols

CERTIFIED ORGANIC

WK PAREVE 68

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Flax Oil Omega-3 Oil by Herbal Select label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Flax Oil Omega-3 Oil label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Flax Oil Omega-3 Oil by Herbal Select

These are the 5 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Tablespoon(s) Dosage formLiquid Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Certified organic Flax seed Oil

Interacts with
293 drugs
0 NP per serving

Flaxseed oil is a plant-based source of the omega-3 fatty acid ALA, which the body can partly convert to the omega-3s found in fish oil. It may help s...

Certified organic Flax seed Oil monograph & interactions

Nutritional Information:

0 NP per serving
  • › Protein
  • › Carbohydrates
  • › Energy
  • › Fats

Other (inactive) ingredients: Rosemary, Mixed Tocopherols, Ascorbyl Palmitate, Citric Acid. These complete the product’s ingredient list but are not active constituents.

Interaction report

Flax Oil Omega-3 Oil by Herbal Select Drug Interactions

Want to check YOUR meds against Flax Oil Omega-3 Oil?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
293Drugs
293 Moderate

Ingredients driving the most interactions

certified organic Flax seed Oil 293

Individual Drug Interactions

The ingredients in Flax Oil Omega-3 Oil interact with 293 drugs. Click any drug to see the details.

1 of the 5 ingredients in Flax Oil Omega-3 Oil interact with drugs. Each result below shows which ingredient is responsible. certified organic Flax seed Oil

Each ingredient & the kinds of drugs it affects

For each ingredient in Flax Oil Omega-3 Oil with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

certified organic Flax seed Oil3 drug types · 293 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, using flaxseed oil in combination with anticoagulant or antiplatelet drugs might have additive effects and increase the risk of bleeding.
Small clinical studies show that consuming flaxseed oil might decrease platelet aggregation and increase bleeding time.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, combining flaxseed oil with other antihypertensive drugs might have additive effects and increase the risk of hypotension.
Some clinical evidence suggests that long-term consumption of flaxseed oil can modestly lower systolic and diastolic blood pressure, while other clinical research shows no effect.

Likelihood Possible Evidence D
Ezetimibe (Zetia)

Concomitant use of flaxseed oil and ezetimibe reduces the absorption of alpha-linolenic acid from flaxseed oil.
In one clinical study, concomitant consumption of ezetimibe 10 mg daily with flaxseed oil 2 grams providing 1 gram of alpha-linolenic acid daily blocked the absorption of alpha-linolenic acid, resulting in an overall reduction in alpha-linolenic plasma levels from baseline.

Likelihood Probable Evidence B
certified organic Flax seed Oil full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Flax Oil Omega-3 Oil, from the product label.

Herbal Select

See all Herbal Select products
Name
Herbal Select
City
Guelph
State
Ontario
ZipCode
N1H 6J4
Phone Number
1-888-313-3369
Web Address
www.herbalselect.com
Pharmacist Counseling Corner

Flax Oil Omega-3 Oil by Herbal Select: Common Questions

Does Flax Oil Omega-3 Oil by Herbal Select interact with any medications?
Yes. Based on its ingredients, Flax Oil Omega-3 Oil has a known interaction with 293 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Flax Oil Omega-3 Oil contains 5 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Will flaxseed oil help my cholesterol?
The evidence doesn't support it. Flaxseed oil is rated possibly ineffective for high cholesterol in our data. That said, talk with your doctor about whether it's worth trying for your specific situation — the research available just doesn't show strong benefit.
Can I take this while pregnant?
There isn't enough reliable safety data to know either way. It's best to check with your doctor or pharmacist before use so you can make the right choice for you and your baby.
What are the side effects?
Most people tolerate it well. A small number experience mild bowel changes, dry mouth, or stomach upset at typical doses. Higher doses (30 grams or more daily) can cause loose stools and diarrhea. Severe allergic reactions are rare.
Does this product have fillers?
Yes — it has inactive ingredients like rosemary, mixed tocopherols, ascorbyl palmitate, and citric acid, which are preservatives and stabilizers. The active ingredient is the certified organic flaxseed oil.
Is flaxseed oil safe if I'm breastfeeding?
There's limited safety information during breastfeeding, so use only with medical advice. Talk with your doctor or pharmacist before starting this product.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Flax Oil Omega-3 Oil is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Flax Oil Omega-3 Oil label
Go deeper

The Full Monographs Behind Flax Oil Omega-3 Oil’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Flaxseed Oil

Interacts with 293 drugs

Flaxseed oil is a plant-based source of the omega-3 fatty acid ALA, which the body can partly convert to the omega-3s found in fish oil. It may help support heart health and provide healthy...

Read the full Flaxseed Oil monograph →
Sources

Sources & How We Checked

Flax Oil Omega-3 Oil's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 21 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Flaxseed Oil 21 references
  1. Kolonel LN, Nomura AM, Cooney RV. Dietary fat and prostate cancer: current status. J Natl Cancer Inst 1999;91:414-28. PubMed
  2. Ramon JM, Bou R, Romea S, et al. Dietary fat intake and prostate cancer risk: a case-control study in Spain. Cancer Causes Control 2000;11:679-85. PubMed
  3. Nordstrom DC, Honkanen VE, Nasu Y, et al. Alpha-linolenic acid in the treatment of rheumatoid arthritis. A double-blind, placebo-controlled and randomized study: flaxseed vs. safflower seed. Rheumatol Int 1995;14:231-4. PubMed
  4. De Stefani E, Deneo-Pellegrini H, Boffetta P, et al. Alpha-linolenic acid and risk of prostate cancer: a case-control study in Uruguay. Cancer Epidemiol Biomarkers Prev 2000;9:335-8.
  5. Giovannucci E, Rimm EB, Colditz GA, et al. A prospective study of dietary fat and risk of prostate cancer. J Natl Cancer Inst 1993;85:1571-9. PubMed
  6. Bloedon LT, Szapary PO. Flaxseed and cardiovascular risk. Nutr Rev 2004;62:18-27. DOI
  7. Laaksonen DE, Laukkanen JA, Niskanen L, et al. Serum linoleic and total polyunsaturated fatty acids in relation to prostate and other cancers: a population-based cohort study. Int J Cancer 2004;111:444-50.. PubMed
  8. Brouwer IA, Katan MB, Zock PL. Dietary alpha-linolenic acid is associated with reduced risk of fatal coronary heart disease, but increased prostate cancer risk: a meta-analysis. J Nutr 2004;134:919-22.
  9. Paschos GK, Magkos F, Panagiotakos DB, et al. Dietary supplementation with flaxseed oil lowers blood pressure in dyslipidaemic patients. Eur J Clin Nutr 2007;61:1201-6. PubMed
  10. Harper CR, Edwards MC, Jacobson TA. Flaxseed oil supplementation does not affect plasma lipoprotein concentration or particle size in human subjects. J Nutr 2006;136:2844-8. PubMed
  11. University of Montreal. Pregnant Women Consuming Flaxseed Oil Have High Risk Of Premature Birth.ScienceDaily, October 29, 2008. Available at: www.sciencedaily.com/releases/2008/10/081027140817.htm (Accessed May 14, 2009).
  12. Allman, M. A., Pena, M. M., and Pang, D. Supplementation with flaxseed oil versus sunflowerseed oil in healthy young men consuming a low fat diet: effects on platelet composition and function. Eur.J Clin.Nutr. 1995;49(3):169-178.
  13. Ursoniu S, Sahebkar A, Andrica F, Serban C, Banach M; Lipid and Blood Pressure Meta-analysis Collaboration Group. Effects of flaxseed supplements on blood pressure: a systematic review and meta-analysis of controlled clinical trial. Clin Nutr. 2016 Jun;3 PubMed
  14. Taghizadeh M, Jamilian M, Mazloomi M, Sanami M, Asemi Z. A randomized-controlled clinical trial investigating the effect of omega-3 fatty acids on vitamin E co-supplementation on markers of insulin metabolism and lipid profiles in gestational diabetes. J
  15. Blackwood DP, LaVallee RK, Al Busaidi A, Jassal DS, Pierce GN. A randomized trial of the effects of ezetimibe on the absorption of omega-3 fatty acids in cardiac disease patients: a pilot study. Clin Nutr ESPEN. 2015 Oct;10(5):e155-e159. PubMed
  16. Morshedzadeh N, Shahrokh S, Aghdaei HA, et al. Effects of flaxseed and flaxseed oil supplement on serum levels of inflammatory markers, metabolic parameters and severity of disease in patients with ulcerative colitis. Complement Ther Med. 2019;46:36-43. PubMed
  17. Downie LE, Hom MM, Berdy GJ, et al. An artificial tear containing flaxseed oil for treating dry eye disease: A randomized controlled trial. Ocul Surf. 2020;18(1):148-157. PubMed
  18. Saleh-Ghadimi S, Kheirouri S, Golmohammadi A, Moludi J, Jafari-Vayghan H, Alizadeh M. Effect of flaxseed oil supplementation on anthropometric and metabolic indices in patients with coronary artery disease: A double-blinded randomized controlled trial. J PubMed
  19. Jamilian M, Tabassi Z, Reiner Z, et al. The effects of n-3 fatty acids from flaxseed oil on genetic and metabolic profiles in patients with gestational diabetes mellitus: a randomised, double-blind, placebo-controlled trial. Br J Nutr. 2020;123(7):792-799
  20. Li L, Li H, Gao Y, Vafaei S, Zhang X, Yang M. Effect of flaxseed supplementation on blood pressure: a systematic review, and dose-response meta-analysis of randomized clinical trials. Food Funct 2023;14(2):675-690. PubMed
  21. Mahmudiono T, Jasim SA, Karim YS, et al. The effect of flaxseed oil consumption on blood pressure among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized clinical trials. Phytother Res 2022;36(10):

See these in context on the Flaxseed Oil monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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